Add a basic lines-based debug-renderer

src/pipeline/debug_render_pipeline/debug_render_style.rs

@@ -0,0 +1,37 @@
+/// A color for debug-rendering.
+///
+/// The default colors are provided in HSLA (Hue Saturation Lightness Alpha) format.
+pub type DebugColor = [f32; 4];
+
+#[derive(Clone, Debug, PartialEq)]
+pub struct DebugRenderStyle {
+    pub subdivisions: u32,
+    pub collider_dynamic_color: DebugColor,
+    pub collider_fixed_color: DebugColor,
+    pub collider_kinematic_color: DebugColor,
+    pub collider_parentless_color: DebugColor,
+    pub impulse_joint_anchor_color: DebugColor,
+    pub impulse_joint_separation_color: DebugColor,
+    pub multibody_joint_anchor_color: DebugColor,
+    pub multibody_joint_separation_color: DebugColor,
+    pub sleep_color_multiplier: [f32; 4],
+    pub rigid_body_axes_length: f32,
+}
+
+impl Default for DebugRenderStyle {
+    fn default() -> Self {
+        Self {
+            subdivisions: 20,
+            collider_dynamic_color: [340.0, 1.0, 0.3, 1.0],
+            collider_kinematic_color: [20.0, 1.0, 0.3, 1.0],
+            collider_fixed_color: [30.0, 1.0, 0.4, 1.0],
+            collider_parentless_color: [30.0, 1.0, 0.4, 1.0],
+            impulse_joint_anchor_color: [240.0, 0.5, 0.4, 1.0],
+            impulse_joint_separation_color: [0.0, 0.5, 0.4, 1.0],
+            multibody_joint_anchor_color: [300.0, 1.0, 0.4, 1.0],
+            multibody_joint_separation_color: [0.0, 1.0, 0.4, 1.0],
+            sleep_color_multiplier: [1.0, 1.0, 0.2, 1.0],
+            rigid_body_axes_length: 0.5,
+        }
+    }
+}